Actually, there have been such tangible bits of things . . . many of them analyzed demonstrating an ‘otherworldly’
—composition
—purity
—mixture
extremely unlikely to have been produced on our planet by known technologies.
Even the archeological dig at Roswell turned up sifted bits that proved to be very uncommon compositions of elements.
To repeat . . .
a TYPE II ERROR CAN BE EVERY BIT AS DEADLY AS A TYPE I ERROR.
Is or was Roswell the military’s top secret testing ground? Doesn’t it then stand to reason that the UFO sitings there was us?